The first and third meals are normal. Many people will skip dinner to lose weight. But if you want to gain weight, you must eat three meals normally, so that you can gain some meat properly.

Second, increase muscle exercise. Don't think that only by losing weight can you exercise. In fact, some muscle exercises can gain weight, such as lifting iron and push-ups.

Third, eating sweets is high in calories, and people who lose weight generally don't eat them. But if you want to gain weight, you can eat some sweets properly. But you can't eat more, which is not good for human health.

Fourth, jogging can increase the peristalsis and appetite of your stomach without consuming too many calories. Jogging is a good choice if you want to gain weight.